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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Mechanical Jurnal Rekayasa Mesin Civil and Environmental Science Journal (CIVENSE) Journal of Sustainable Construction Advances in Civil Engineering and Sustainable Architecture
Dan-asabe, Bashar
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Innovative Energy-Efficient Solutions for Sustainable Development in Nigeria's Construction Industry Unegbu, Hyginus Chidiebere Onyekachi; Yawas, Danjuma S.; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
JURNAL MECHANICAL Vol 15, No 2 (2024): JURNAL MECHANICAL
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The construction industry in Nigeria, like many developing countries, faces significant challenges and opportunities in adopting energy-efficient technologies. This study provides a comprehensive analysis of the current state of energy-efficient technologies in Nigeria's construction sector, examining adoption rates, perceived barriers, benefits, and recommendations for enhancing energy efficiency. Data were collected from 50 survey respondents and 15 in-depth interviews with key stakeholders, including architects, engineers, policymakers, and construction managers. The findings reveal that solar panels, LED lighting, and energy-efficient HVAC systems are the most commonly adopted technologies. Regression analysis indicates that regulatory support and stakeholder awareness are significant predictors of technology adoption, while financial constraints, regulatory challenges, and a lack of technical expertise are primary barriers. The thematic analysis highlights the interplay between economic incentives, regulatory environments, and cultural attitudes in influencing adoption. Operational cost savings, enhanced environmental sustainability, and improved indoor environmental quality are identified as major benefits of adopting energy-efficient technologies. The study provides several recommendations, including strengthening regulatory frameworks, providing financial incentives, enhancing capacity-building programs, conducting public awareness campaigns, and improving supply chains for green materials. This research contributes to the understanding of sustainable construction practices in Nigeria and offers practical strategies for overcoming barriers to the adoption of energy-efficient technologies. The findings have important implications for policymakers, industry stakeholders, and researchers aiming to promote sustainability in the construction sector.
Investigation of Community Engagement in Sustainable Construction Projects: Case Studies from Nigeria Unegbu, Hyginus C. O.; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Journal of Sustainable Construction Vol 4 No 1 (2024): Journal of Sustainable Construction
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/josc.v4i1.8109

Abstract

This study investigates the role of community engagement in sustainable construction projects in Nigeria, focusing on three case studies: a green residential building in Lagos, an eco-friendly community center in Abuja, and a sustainable water infrastructure project in rural Kano. Using a mixed-methods approach, data were collected through  interviews, surveys, and document analysis. The research identifies significant variations in engagement practices, with Lagos showing high engagement levels, leading to greater community acceptance and better environmental outcomes. Key success factors include strong leadership, adequate funding, and effective communication, while challenges such as socio-cultural barriers and political interference were noted. The findings emphasize the importance of sustained, tailored engagement strategies to enhance project sustainability and community support. This study contributes to the literature by providing empirical data on the long-term impacts of community engagement, offering insights for policy makers and project managers to improve community participation in sustainable construction.
An Investigation of Renewable Energy Solutions for Off-Grid Sustainable Housing in Rural Nigeria Unegbu, Hyginus C. O.; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Journal of Sustainable Construction Vol 4 No 1 (2024): Journal of Sustainable Construction
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/josc.v4i1.8112

Abstract

This study examines the adoption of renewable energy solutions for off-grid sustainable housing in rural Nigeria, focusing on the types of technologies implemented, their impact on living standards, and the factors influencing adoption. A mixed-methods approach, combining quantitative survey data from 340 households with qualitative interviews and case studies, reveals that solar photovoltaic (PV) systems are the most widely adopted renewable energy technology, significantly enhancing health outcomes, economic activities, and educational opportunities. Multivariate regression analysis identifies income, education level, and awareness as key predictors of renewable energy adoption, with coefficients of 0.345, 0.267, and 0.453, respectively, suggesting that higher income, education levels, and awareness substantially increase the likelihood of adopting renewable energy solutions. Structural Equation Modeling (SEM) illustrates that awareness mediates the impact of income and education on adoption, which, in turn, contributes to improved living standards. The study underscores the need for comprehensive policies, community engagement, capacity building, financial support, and effective monitoring and evaluation frameworks to encourage renewable energy adoption in rural Nigeria. These findings highlight the multifaceted benefits of renewable energy, including improved health, economic growth, and educational outcomes, while suggesting that addressing identified barriers can enhance the effectiveness and scalability of renewable energy initiatives.
Climate Resilience in Nigerian Construction: A Systematic Review of Strategies and Outcomes Unegbu, Hyginus C. O.; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Journal of Sustainable Construction Vol 4 No 1 (2024): Journal of Sustainable Construction
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/josc.v4i1.8114

Abstract

Climate resilience in the construction sector is critical for ensuring the durability and sustainability of infrastructure amidst the increasing impacts of climate change. This study systematically reviews climate resilience strategies in the Nigerian construction sector, evaluating their effectiveness and outcomes. A comprehensive literature search yielded 50 peer-reviewed journal articles, conference papers, and official reports, focusing on design innovations, material selection, policy frameworks, and case studies across Nigeria's diverse climatic zones. Key findings indicate that strategies such as flood barriers, green roofs, and sustainable materials are effective in mitigating climate risks, although challenges such as financial constraints, regulatory gaps, and lack of awareness persist. The study highlights the importance of community involvement, government support, and technological innovation in successfully implementing resilience measures. Comparative analysis with global best practices underscores the need for integrated approaches tailored to Nigeria's unique context. The study concludes with recommendations for future research, emphasizing the need for longitudinal studies, cross-regional comparisons, and the integration of traditional knowledge. Policy implications include the development of comprehensive regulatory frameworks and public-private partnerships to enhance the sector's adaptive capacity. This research provides valuable insights and practical recommendations for enhancing climate resilience in Nigeria's construction industry, contributing to broader goals of sustainable development and climate adaptation.
OPTIMIZING WASTE MANAGEMENT STRATEGIES FOR SUSTAINABLE CONSTRUCTION: ASSESSING THE IMPLEMENTATION OF CIRCULAR ECONOMY PRINCIPLES IN NIGERIA Unegbu, Hyginus Chidiebere Onyekachi; YAWAS, Danjuma S.; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Jurnal Ilmiah Teknologi dan Rekayasa Vol 29, No 3 (2024)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2024.v29i3.12837

Abstract

This study investigates waste management practices in Nigeria’s construction industry, with a focus on evaluating the adoption of circular economy (CE) principles. Using a mixed-methods approach, including structured surveys and semi-structured interviews with key stakeholders, the research highlights significant barriers to CE implementation. The findings reveal that while awareness of CE principles is moderately high, actual adoption remains limited due to financial constraints, weak regulatory enforcement, inadequate technical expertise, and insufficient infrastructure. The industry primarily relies on unsustainable waste disposal methods such as landfilling and open dumping, with limited recycling and material reuse. The study identifies opportunities for improving waste management through government-led financial incentives, regulatory reforms, capacity-building programs, and investment in recycling infrastructure. Furthermore, the adoption of digital tools like Building Information Modeling (BIM) and strategies such as modular construction are highlighted as promising approaches to reducing waste and enhancing resource efficiency. The research concludes with recommendations for a collaborative effort between government, industry, and educational institutions to drive the adoption of CE practices. Implementing these strategies could lead to significant environmental, economic, and social benefits for Nigeria’s construction industry.
An Investigation of Innovative Materials and Technologies for Sustainable Construction in Nigeria Unegbu, H C O; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, A.A.
Civil and Environmental Science Journal (CIVENSE) Vol. 7 No. 2 (2024)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2024.007.02.8

Abstract

This study explores the adoption and effects of innovative materials and advanced technologies on sustainable construction practices in Nigeria. Employing a mixed-methods approach, the research integrates quantitative surveys and qualitative interviews to collect comprehensive data from 255 construction professionals, achieving an 85% response rate. The findings indicate that recycled materials and green concrete are the most frequently utilized innovative materials, primarily due to their environmental advantages and cost-effectiveness. Building Information Modeling (BIM) and prefabrication emerge as the most widely adopted advanced technologies, enhancing efficiency, reducing waste, and improving project quality. Additionally, regression analysis reveals the complex nature of adopting sustainable construction practices, with cost emerging as a significant barrier for many firms. Despite these positive developments, challenges such as high initial costs, lack of awareness, insufficient regulatory support, and limited availability of sustainable materials impede wider adoption. The study highlights the necessity for targeted interventions, including financial incentives, stronger regulatory frameworks, and comprehensive education and training programs, to foster sustainable construction practices. The findings have substantial implications for policymakers, industry professionals, and researchers, offering a foundation for future research and practical strategies to advance sustainability in Nigeria's construction sector.
INTEGRATING RENEWABLE ENERGY SOLUTIONS IN SUSTAINABLE BUILDING PROJECTS: A CASE STUDY OF NIGERIAN URBAN CENTERS (This article has been retracted due to findings of duplicate publication) Unegbu, Hyginus Chidiebere Onyekachi; YAWAS, Danjuma S.; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Jurnal Ilmiah Teknologi dan Rekayasa Vol 30, No 1 (2025)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2025.v30i1.12836

Abstract

This study explored the integration of renewable energy solutions in sustainable building projects across three major Nigerian urban centers: Lagos, Abuja, and Port Harcourt. The research focused on the viability and impact of solar photovoltaic (PV) systems, wind energy, and biomass waste-to-energy solutions in reducing energy consumption and greenhouse gas (GHG) emissions. Data were collected through interviews, site visits, and simulations using energy performance modelling software. Advanced data analyses, including cost-benefit analysis (CBA), sensitivity analysis, and life cycle assessment (LCA), were conducted to assess financial viability and environmental impact. The results show that solar PV systems are the most effective, providing energy savings of 25% to 35% with a payback period of 6 to 8 years. Biomass waste-to-energy projects demonstrated promise in industrial settings, while wind energy adoption remains limited due to high upfront costs and longer payback periods. The study identifies key barriers to adoption, such as high initial capital costs, lack of technical expertise, and weak policy enforcement. Policy recommendations include increasing financial incentives, improving policy enforcement, building local technical capacity, and fostering public-private partnerships to accelerate renewable energy adoption in Nigeria’s urban centers.
Milling S2-Glass and Basalt Fiber Composites: A Comprehensive Damage Analysis Unegbu, H. C.O.; Yawasa, Danjuma S.; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Jurnal Rekayasa Mesin Vol. 19 No. 3 (2024): Volume 19, Nomor 3, Desember 2024
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v19i3.5929

Abstract

This research provides a comprehensive analysis of the machining behavior and damage mechanisms of S2-glass and basalt fiber composites during milling. Both materials, known for their high-performance applications, present distinct challenges due to their anisotropic and heterogeneous properties. The study investigates surface roughness, delamination, fiber pull-out, and cutting forces under a range of spindle speeds, feed rates, and depths of cut. Finite Element Analysis (FEA) was employed to simulate stress distributions at the fiber-matrix interface, complementing the experimental data. Results indicate that basalt fiber composites are significantly more prone to surface roughness, delamination, and fiber pull-out compared to S2-glass composites, especially at higher spindle speeds and feed rates. Elevated cutting forces in basalt composites were strongly correlated with increased damage, whereas S2-glass composites exhibited greater resilience to machining-induced stress, allowing for more aggressive cutting with less risk of surface degradation. The FEA simulations validated these experimental findings, highlighting the critical role of stress concentration at the fiber-matrix interface in damage propagation. These insights underscore the importance of optimizing machining parameters for brittle composites like basalt and provide valuable guidelines for enhancing surface quality and structural integrity in industrial applications involving fiber-reinforced composites.
An Analysis of the Challenges to Achieving Sustainable Practices in Nigeria's Construction Sector Unegbu, Hyginus; YAWAS, Danjuma; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Advances in Civil Engineering and Sustainable Architecture Vol. 7 No. 1 (2025): Advances in Civil Engineering and Sustainable Architecture
Publisher : Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/acesa.v7i1.14464

Abstract

This study investigates the key barriers to the adoption of sustainable construction practices in Nigeria, focusing on regulatory, organizational, social, cultural, and technological factors. Utilizing a mixed-methods approach, the research combines qualitative case studies and interviews with quantitative survey data to identify these challenges. The findings highlight the multifaceted and interconnected nature of these barriers, with regulatory challenges—such as outdated building codes, insufficient legislative support, and bureaucratic inefficiencies—emerging as the most significant. Social and cultural resistance to change, coupled with limited public awareness of sustainable construction benefits, further complicate adoption. Technological challenges, including high costs of green materials and a shortage of skilled professionals, are also key obstacles. The study suggests that Nigeria can draw valuable lessons from other developing countries, such as South Africa, India, and Indonesia, where similar challenges have been addressed through proactive policies and innovative practices. Recommendations for overcoming these barriers include modernizing building codes, strengthening leadership in sustainability within the construction sector, and launching comprehensive public education campaigns to shift societal attitudes. The study further advocates for increased investment in green technologies and the development of local supply chains to reduce costs and enhance the accessibility of sustainable construction materials. By adopting these strategies, Nigeria can promote sustainable building practices and contribute to global knowledge on overcoming barriers to sustainability in developing economies.
Greening Nigeria’s Cities: A Case Study on Renewable Energy in Sustainable Urban Development Unegbu, Hyginus; Yawas, Danjuma Saleh; Dan-asabe, Bashar; Alabi, Abdulmumin Akoredeley
Journal of Sustainable Construction Vol 4 No 2 (2025): Journal of Sustainable Construction
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/josc.v4i2.8867

Abstract

This study examines how renewable energy can be used in sustainable building projects in three major Nigerian cities: Lagos, Abuja, and Port Harcourt. It looks at the potential of solar panels (PV systems), wind energy, and converting biomass waste into energy to reduce both energy use and greenhouse gas emissions. To gather insights, the research involved interviews, site visits, and computer simulations using energy modelling software. The analysis included cost-benefit studies, sensitivity checks, and life cycle assessments to measure both economic and environmental outcomes. Results show that solar PV systems are the most efficient, cutting energy use by 25% to 35% and paying for themselves in 6 to 8 years. Biomass energy showed good potential in industrial areas, while wind energy is less common due to high upfront costs and slower returns. The study highlights key challenges such as high starting costs, limited technical skills, and weak enforcement of energy policies. To overcome these barriers, the paper suggests increasing financial support, strengthening policy implementation, investing in local skills development, and encouraging public-private partnerships to promote the use of renewable energy in Nigerian cities.
Co-Authors Alabi, A.A. Alabi, Abdulmumin Akoredeley Unegbu, H C O Unegbu, H. C.O. Unegbu, Hyginus Unegbu, Hyginus C. O. Unegbu, Hyginus Chidiebere Onyekachi YAWAS, Danjuma Yawas, Danjuma S. Yawas, Danjuma Saleh Yawasa, Danjuma S.